css: Merge `.portico-landing.hello .open-source img` css.
css: Merge `.portico-landing.hello .open-source img` css.

andersk/zulip,kou/zulip,brainwane/zulip,punchagan/zulip,andersk/zulip,eeshangarg/zulip,hackerkid/zulip,andersk/zulip,punchagan/zulip,zulip/zulip,eeshangarg/zulip,kou/zulip,zulip/zulip,showell/zulip,eeshangarg/zulip,andersk/zulip,hackerkid/zulip,eeshangarg/zulip,zulip/zulip,zulip/zulip,brainwane/zulip,showell/zulip,kou/zulip,brainwane/zulip,zulip/zulip,kou/zulip,brainwane/zulip,rht/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,brainwane/zulip,punchagan/zulip,eeshangarg/zulip,hackerkid/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,rht/zulip,rht/zulip,showell/zulip,zulip/zulip,showell/zulip,punchagan/zulip,punchagan/zulip,andersk/zulip,kou/zulip,punchagan/zulip,eeshangarg/zulip,showell/zulip,brainwane/zulip,hackerkid/zulip,showell/zulip,brainwane/zulip,rht/zulip,rht/zulip,punchagan/zulip,zulip/zulip,andersk/zulip,showell/zulip,kou/zulip,kou/zulip,hackerkid/zulip